| 2015-12-10 | UFC Fight Night: Namajunas vs. VanZant | Welterweight | Tim Means def. John Howard | KO (punch) | 2 | 0:21 |
| 2015-07-11 | UFC 189: Mendes vs. McGregor | Welterweight | John Howard def. Cathal Pendred | Decision (split) (29–28, 28–29, 29–28) | 3 | 5:00 |
| 2015-01-18 | UFC Fight Night: McGregor vs. Siver | Welterweight | Lorenz Larkin def. John Howard | TKO (punches) | 1 | 2:17 |
| 2014-09-27 | UFC 178: Johnson vs. Cariaso | Welterweight | Brian Ebersole def. John Howard | Decision (split) (29–28, 28–29, 29–28) | 3 | 5:00 |
| 2014-04-11 | UFC Fight Night: Nogueira vs. Nelson | Welterweight | Ryan LaFlare def. John Howard | Decision (unanimous) (29–28, 29–28, 29–28) | 3 | 5:00 |
| 2013-12-28 | UFC 168: Weidman vs. Silva 2 | Welterweight | John Howard def. Siyar Bahadurzada | Decision (unanimous) (30–27, 30–27, 30–27) | 3 | 5:00 |
| 2013-08-17 | UFC Fight Night: Shogun vs. Sonnen | Middleweight | John Howard def. Uriah Hall | Decision (split) (30–27, 28–29, 29–28) | 3 | 5:00 |
| 2011-06-26 | UFC Live: Kongo vs. Barry | Welterweight | Matt Brown def. John Howard | Decision (unanimous) (29–28, 29–28, 29–28) | 3 | 5:00 |
| 2010-12-11 | UFC 124: St-Pierre vs. Koscheck 2 | Welterweight | Thiago Alves def. John Howard | Decision (unanimous) (30–27, 30–27, 30–27) | 3 | 5:00 |
| 2010-08-01 | UFC Live: Jones vs. Matyushenko | Welterweight | Jake Ellenberger def. John Howard | TKO (doctor stoppage) | 3 | 2:21 |
| 2010-03-21 | UFC Live: Vera vs. Jones | Welterweight | John Howard def. Daniel Roberts | KO (punch) | 1 | 2:01 |
| 2009-12-05 | The Ultimate Fighter: Heavyweights Finale | Welterweight | John Howard def. Dennis Hallman | KO (punches) | 3 | 4:55 |
| 2009-08-08 | UFC 101: Declaration | Welterweight | John Howard def. Tamdan McCrory | Decision (split) (29–28, 28–29, 29–28) | 3 | 5:00 |
| 2009-01-31 | UFC 94: St-Pierre vs. Penn 2 | Welterweight | John Howard def. Chris Wilson | Decision (split) (29–28, 28–29, 29–28) | 3 | 5:00 |